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    <title>girth</title>
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    <center>Scilab function</center>
    <div align="right">Last update : September 1996</div>
    <p>
      <b>girth</b> -  girth of a directed graph</p>
    <h3>
      <font color="blue">Calling Sequence</font>
    </h3>
    <dl>
      <dd>
        <tt>d = girth(g)  </tt>
      </dd>
    </dl>
    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>g</b>
        </tt>: graph list</li>
      <li>
        <tt>
          <b>d</b>
        </tt>: integer</li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
      <tt>
        <b>girth</b>
      </tt> computes the length (number of arcs) of the shortest cycle in an
    unweighted directed graph <tt>
        <b>g</b>
      </tt>.</p>
    <h3>
      <font color="blue">Examples</font>
    </h3>
    <pre>

ta=[1 6 2 4 7 5 6 8 4 3 5 1];
he=[2 1 3 6 4 8 8 7 2 7 3 5];
g=make_graph('foo',1,8,ta,he);
g('node_x')=[285  284  335  160  405  189  118  45];
g('node_y')=[266  179   83  176  368  252  64  309];
show_graph(g);
d=girth(g)
 
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